Mixed gas control method and device of pre-combustion chamber, vehicle and storage medium

Abstract

The invention discloses a mixed gas control method and device of a pre-combustion chamber, a vehicle and a storage medium. The method relates to the field of vehicle engineering, and comprises the following steps: acquiring the current driving condition of a vehicle; when the running working condition is a preset working condition, the current mixed gas state of the mixing cavity and the current load state of the engine are obtained, the preset working condition is used for representing that the engine currently provides power for the vehicle, and the mixed gas state is used for representing whether the concentration of mixed gas contained in the mixing cavity is larger than or equal to the preset concentration or not; the load state is used for representing whether the working efficiency of the engine is greater than or equal to preset efficiency; and the gas transmission device is controlled to operate based on the mixed gas state and the load state so as to control the mixed gas to enter the pre-combustion chamber, and the pre-combustion chamber is connected with the mixing cavity through the gas transmission device. The technical problem that the performance of an engine is low due to the fact that the formation quality of mixed gas in the pre-combustion chamber is poor is solved.

Description

Technical Field

[0001] The present invention relates to the field of vehicle engineering, and in particular to a method and device for controlling a mixed gas in a pre-combustion chamber, a vehicle, and a storage medium. Background Art

[0002] In traditional spark-ignition engines, the spark plug directly ignites the combustible mixture in the main combustion chamber. However, due to the uneven distribution of the mixture and the limitation of the spark plug ignition energy, the engine is prone to problems such as unstable combustion and detonation under high load and high speed conditions, especially in the pursuit of high energy efficiency and low emissions in modern engine design. Pre-chamber jet ignition technology is a solution to improve ignition energy and combustion efficiency. It ignites the mixture in the pre-chamber in advance, and then sprays the high-temperature and high-pressure combustion products into the main combustion chamber through the connecting holes between the pre-chamber and the main combustion chamber, thereby promoting the rapid combustion of the mixture in the main combustion chamber. This method can significantly increase the combustion speed and reduce incomplete combustion, thereby reducing emissions and improving engine performance.

[0003] However, in the traditional pre-combustion chamber jet ignition system, the pre-combustion chamber space is limited, and the fuel injected by the fuel injector is very easy to hit the wall, resulting in poor quality of mixture formation, thereby affecting the effect of improving the working performance of the engine.

[0004] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0005] The embodiments of the present invention provide a method and device for controlling a mixture in a pre-combustion chamber, a vehicle, and a storage medium, so as to at least solve the technical problem of low engine performance caused by poor quality of mixture formation in the pre-combustion chamber.

[0006] According to one aspect of an embodiment of the present invention, a mixture control method for a pre-combustion chamber is provided, comprising: obtaining a current driving condition of a vehicle; in response to the driving condition being a preset condition, obtaining a current mixture state of the mixing chamber and a current load state of the engine, wherein the preset condition is used to characterize that the engine is currently providing power to the vehicle, the mixture state is used to characterize whether the concentration of the mixture contained in the mixing chamber is greater than or equal to a preset concentration, and the load state is used to characterize whether the working efficiency of the engine is greater than or equal to a preset efficiency; based on the mixture state and the load state, controlling the operation of a gas transmission device to control the mixture to enter the pre-combustion chamber, wherein the pre-combustion chamber is connected to the mixing chamber via the gas transmission device.

[0007] Furthermore, the gas transmission device includes: a phase control shaft and a controllable valve, the phase control shaft is connected to the controllable valve, the controllable valve is connected to the mixing chamber and the pre-combustion chamber, wherein the phase control shaft is used to control the opening moment of the controllable valve entering an open state, and the controllable valve is used to transmit the mixture into the pre-combustion chamber when it is in the open state; the operation of the gas transmission device is controlled based on the mixture transmission strategy, including: in response to the mixture state characterizing that the concentration of the mixture is greater than or equal to a preset concentration, and the load state characterizing that the working efficiency of the engine is greater than or equal to a preset threshold, obtaining the current operating condition of the engine; in response to the operating condition being a lean combustion condition, controlling the rotation of the phase control shaft according to the first control parameter to delay the opening moment of the controllable valve.

[0008] Furthermore, the gas transmission device also includes: a hydraulic oil control shaft, which is connected to the controllable valve, wherein the hydraulic oil control shaft is used to control the duration of the controllable valve in the open state; the method also includes: in response to the operating condition being not a lean burn condition, controlling the rotation of the hydraulic oil control shaft according to a second control parameter to extend the duration of the controllable valve in the open state.

[0009] Furthermore, the method also includes: in response to the mixture state characterizing that the concentration of the mixture is greater than or equal to a preset concentration, and the load state characterizing that the working efficiency of the engine is less than a preset threshold, controlling the rotation of the phase control shaft according to the third control parameter to advance the opening time of the controllable valve.

[0010] Furthermore, the method also includes: in response to the mixture state characterizing that the concentration of the mixture is less than a preset concentration, controlling the operation of the fuel injection device according to a fourth control parameter to extend the operation time of the fuel injection device, wherein the fuel injection device is used to increase the concentration of the mixture in the mixing chamber.

[0011] Furthermore, the method also includes: detecting the air volume in the precombustion chamber to obtain the air volume in the precombustion chamber; obtaining the difference between the air volume and a reference volume to obtain an air volume difference, wherein the reference volume is used to characterize the air volume contained in the precombustion chamber under normal circumstances; constructing a pressure relief parameter based on the air volume difference; and controlling the operation of a pressure relief valve based on the pressure relief parameter, wherein the pressure relief valve is connected to the precombustion chamber to remove the air inside the precombustion chamber.

[0012] According to another aspect of an embodiment of the present invention, a mixture control device for a pre-combustion chamber is also provided, including: a first acquisition module, used to acquire the current driving condition of the vehicle; a second acquisition module, used to acquire the current mixture state of the mixing chamber and the current load state of the engine in response to the driving condition being a preset condition, wherein the preset condition is used to characterize that the engine is currently providing power to the vehicle, the mixture state is used to characterize whether the concentration of the mixture contained in the mixing chamber is greater than or equal to the preset concentration, and the load state is used to characterize whether the working efficiency of the engine is greater than or equal to the preset efficiency; a device control module, used to control the operation of the gas transmission device based on the mixture state and the load state, so as to control the mixture to enter the pre-combustion chamber, wherein the pre-combustion chamber is connected to the mixing chamber through the gas transmission device.

[0013] According to another aspect of an embodiment of the present invention, a vehicle is further provided, comprising: a memory storing an executable program; and a processor for running the program, wherein the method in each embodiment of the present invention is executed when the program is running.

[0014] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided. The computer-readable storage medium includes a stored executable program, wherein when the executable program is running, the device where the computer-readable storage medium is located is controlled to execute the methods in various embodiments of the present invention.

[0015] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a computer program. When the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0016] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0017] According to another aspect of the embodiments of the present invention, a computer program is further provided. When the computer program is executed by a processor, the methods in the embodiments of the present invention are implemented.

[0018] In an embodiment of the present invention, the current driving condition of the vehicle is obtained; in response to the driving condition being a preset condition, the current mixture state of the mixing chamber and the current load state of the engine are obtained; based on the mixture state and the load state, the operation of the gas transmission device is controlled to control the way in which the mixture enters the pre-combustion chamber, and a method combining external prefabrication of the mixture and supply quantity regulation is combined to achieve flexible control of the gas transmission device under different driving conditions, so as to further achieve high-flexibility adjustment of the mixing time and concentration of the mixture, thereby ensuring that the concentration of the mixture in the pre-combustion chamber meets the target state under different driving conditions, thereby achieving the purpose of improving the formation quality of the pre-combustion chamber mixture and the flexibility of concentration regulation, thereby achieving the technical effect of high-flexibility regulation of the mixture concentration under different engine conditions and combustion modes, and further solving the technical problem of low engine performance caused by poor formation quality of the pre-combustion chamber mixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 is a flow chart of a mixture control method of a pre-combustion chamber according to an embodiment of the present invention;

[0021] Figure 2 is a detailed flow chart of a mixed gas control method of a pre-combustion chamber according to an embodiment of the present invention;

[0022] Figure 3 is a structural diagram of an optional mixed gas preparation and supply control system according to an embodiment of the present invention;

[0023] Figure 4 is a detailed structural diagram of an optional mixed gas preparation and supply control system according to an embodiment of the present invention;

[0024] Figure 5 is a structural diagram of an optional mixed gas control system according to an embodiment of the present invention;

[0025] Figure 6 is a structural diagram of an optional intake air flow control system according to an embodiment of the present invention;

[0026] Figure 7 is a structural diagram of an optional lower part of a pre-combustion chamber according to an embodiment of the present invention;

[0027] Figure 8 is a structural diagram of an optional upper part of a pre-combustion chamber according to an embodiment of the present invention;

[0028] Fig. 9is a structural diagram of an optional valve according to an embodiment of the present invention;

[0029] Fig.10 is a structural diagram of an optional mixture disturbance shaft according to an embodiment of the present invention;

[0030] Fig.11a is a structural diagram of an optional support block according to an embodiment of the present invention;

[0031] Fig.11b is a structural diagram of another optional support block according to an embodiment of the present invention;

[0032] Fig.11c is a structural diagram of another optional support block according to an embodiment of the present invention;

[0033] Fig.12 is a structural diagram of an optional phase control axis according to an embodiment of the present invention;

[0034] Fig.13 is a structural diagram of an optional one-way valve body according to an embodiment of the present invention;

[0035] Fig.14 is a structural diagram of another optional one-way valve body according to an embodiment of the present invention;

[0036] Fig.15 is a cross-sectional view of an optional front cover according to an embodiment of the present invention;

[0037] Fig.16 is a structural diagram of an optional camshaft according to an embodiment of the present invention;

[0038] Fig.17 is a structural diagram of an optional valve body according to an embodiment of the present invention;

[0039] Fig.18 is a structural diagram of an optional annular stopper according to an embodiment of the present invention;

[0040] Fig.19 is a structural diagram of an optional fixed block according to an embodiment of the present invention;

[0041] Fig. 20 is a structural diagram of another optional fixing block according to an embodiment of the present invention;

[0042] Fig.21 is a structural diagram of an optional hydraulic oil control shaft according to an embodiment of the present invention;

[0043] Fig. 22 Schematic diagram of a mixture control device for a pre-combustion chamber according to an embodiment of the present invention. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0045] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0046] According to an embodiment of the present invention, an embodiment of a mixture control method for a pre-combustion chamber is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0047] Figure 1 is a flow chart of a mixed gas control method for a pre-combustion chamber according to an embodiment of the present invention. Figure 1 As shown, the method comprises the following steps:

[0048] Step S102, obtaining the current driving condition of the vehicle.

[0049] The above-mentioned driving conditions may be the operating state of the vehicle under different driving conditions, for example, an idling condition, an acceleration condition, a deceleration condition, a constant speed condition, etc., but is not limited thereto.

[0050] In an optional embodiment, taking into account that the engine has different requirements for the mixture concentration under different driving conditions, if the mixture concentration is not adjusted according to the above-mentioned different driving conditions, it may lead to decreased ignition efficiency and incomplete combustion, thereby affecting the stability and efficiency of the engine. Therefore, the engine control system (hereinafter referred to as the control system) can obtain the current driving condition of the vehicle through pre-set sensors.

[0051] For example, in order to monitor the vehicle speed in real time, the sensor may be a vehicle speed sensor, which can obtain the vehicle speed information in real time and report it to the control system. The control system can determine the current driving condition of the vehicle based on the current vehicle speed information.

[0052] For another example, in order to monitor the state of the engine in real time, the sensor may be an engine speed sensor, which can monitor the engine speed, identify the engine load condition, and report the identified load condition to the control system. The control system can determine the current driving condition of the vehicle based on the current engine load condition.

[0053] For another example, in order to monitor the driving state of the vehicle in real time, the above sensor can be a combination of an accelerator pedal position sensor and a brake pedal position sensor, wherein the accelerator pedal position sensor can detect the degree of operation of the accelerator pedal by the driver, indirectly reflecting the acceleration demand of the vehicle, and the brake pedal position sensor can detect the degree of depression of the brake pedal, which is used to identify deceleration or braking. The above two sensors can report the real-time monitoring content to the control system, and the control system can determine the current driving condition of the vehicle based on the current acceleration demand or braking state.

[0054] In another optional embodiment, in order to improve the intelligence of vehicle operation, the control system may also include a pre-trained self-learning and prediction model based on an artificial intelligence algorithm. The model predicts the driver's future behavior based on historical driving data and personal driving habits, and adjusts driving condition judgment and engine control strategies in a more intelligent way.

[0055] For example, the on-board computer can include a pre-trained deep learning algorithm model that can learn the driver's behavior patterns (such as aggressive driving, economical driving, etc.). The control system can more intelligently predict and adapt to the driver's driving habits, improving the driving experience and vehicle performance.

[0056] For another example, the onboard computer can contain a pre-trained machine learning algorithm model that can use the road conditions ahead to predict possible future driving conditions. If the GPS (Global Positioning System) shows a downhill section ahead, the control system can predictively adjust the engine speed and throttle response to achieve more effective energy management.

[0057] In another optional embodiment, considering that the computing load of the control system is too high, which may affect the control system's ability to process data and execute tasks, thereby increasing safety hazards during vehicle driving, the control system can also upload driving data to the cloud for data analysis, and optimize the judgment of driving status based on big data and cloud computing technology, thereby realizing remote calculation and analysis of data.

[0058] For example, in order to reduce the computing load of the control system, the control system can transmit the driving data to the cloud server through the vehicle communication module (such as a cellular network module or a Wi-Fi module), and the transmission of the driving data can be real-time. After receiving the data, the cloud server can process and analyze the data based on its powerful computing resources to determine the current driving condition of the vehicle and return it to the vehicle's control system, thereby realizing intelligent and efficient driving condition recognition.

[0059] Step S104, in response to the driving condition being a preset condition, obtain the current mixture state of the mixing chamber and the current load state of the engine, wherein the preset condition is used to characterize that the engine is currently providing power to the vehicle, the mixture state is used to characterize whether the concentration of the mixture contained in the mixing chamber is greater than or equal to the preset concentration, and the load state is used to characterize whether the working efficiency of the engine is greater than or equal to the preset efficiency.

[0060] The preset operating condition may be a preset vehicle operating state, for example, an idle operating state or a lean combustion operating state, but is not limited thereto. The mixed gas state may be a degree of mixing of fuel and air. The load state may be an engine operating efficiency. The preset concentration may be a preset mixing ratio of fuel and air. The preset efficiency may be a preset engine operating efficiency.

[0061] In an optional embodiment, considering that the state of the mixture (concentration and uniformity) directly affects the efficiency of combustion and the performance of the engine, the concentration requirements of the mixture are different when the engine is running under different driving conditions. Therefore, the control system needs to obtain the state of the mixture and the engine load state to dynamically adjust the engine's working mode, thereby improving the engine's performance. The control system can first judge the current driving condition obtained. When the above driving condition meets the above preset condition, the control system can further obtain the current state of the mixture in the mixing chamber, which can be used to characterize whether the concentration of the mixture contained in the mixing chamber is greater than or equal to the preset concentration. At the same time, the control system can obtain the current load state of the engine, which can be used to characterize whether the working efficiency of the engine is greater than or equal to the preset efficiency.

[0062] For example, the control system has obtained the current driving conditions of the vehicle. In order to achieve more complex and accurate control strategies to cope with different driving scenarios and driving requirements, the control system can directly measure the oxygen content in the mixed gas based on the air-fuel ratio sensor pre-installed at the mixing chamber or its outlet, calculate the actual air-fuel ratio, thereby obtaining the current air-fuel ratio in the mixing chamber, and judging the relationship between the concentration of the mixed gas and the preset concentration. At the same time, the control system can monitor the opening of the throttle based on the throttle position sensor, thereby obtaining the current load state of the engine given the opening of the throttle, and judging the relationship between the engine working efficiency and the preset efficiency based on the load state.

[0063] For another example, the control system can evaluate the concentration and quality of the mixed gas by detecting and analyzing the chemical components in the mixed gas based on a chemical sensor pre-installed in the mixing chamber or at its outlet, and determine the relationship between the concentration of the mixed gas and the preset concentration. At the same time, the control system can obtain the current load state of the engine based on the engine speed sensor, and determine the relationship between the engine working efficiency and the preset efficiency based on the load state.

[0064] Step S106, controlling the operation of the gas transmission device based on the state of the mixed gas and the load state to control the mixed gas to enter the pre-combustion chamber, wherein the pre-combustion chamber is connected to the mixing chamber through the gas transmission device.

[0065] The gas transmission device may be a device for transmitting the mixed gas from the intake system to the pre-combustion chamber, and for transmitting the high-temperature and high-pressure gas generated by combustion in the pre-combustion chamber to the main combustion chamber.

[0066] In an optional embodiment, considering that in the related art, the pre-combustion chamber mixed gas concentration is difficult to reach the target state adapted to the above different driving conditions under different driving conditions, which affects the engine performance, therefore, the control system can control the operation of the gas transmission device based on the above mixed gas state and load state. The above pre-combustion chamber can be connected to the mixing chamber through the gas transmission device, therefore, the detection system can control the mixed gas to enter the pre-combustion chamber by controlling the operation of the gas transmission device.

[0067] For example, if the state of the mixed gas is not a lean mixed gas, and the state of the engine load is a light load, the control system can adjust the flow area of ​​the ring groove and the hole on the hydraulic oil chamber by driving the motor to open the valve earlier. At the same time, the control system can also increase the flow area of ​​the oil channel and the inclined hole by driving the motor, shorten the duration of the valve opening, and ensure that a richer mixed gas enters the pre-combustion chamber.

[0068] For another example, if the driving condition is not a lean-burn condition, the mixed gas state is not a lean mixture, and the engine load state is not a low load, the control system can drive the motor to reduce the flow area of ​​the oil channel and the inclined hole, extend the duration of the valve opening, and allow a mixture with a lower concentration to enter the pre-combustion chamber.

[0069] In an embodiment of the present invention, the current driving condition of the vehicle is obtained; in response to the driving condition being a preset condition, the current mixture state of the mixing chamber and the current load state of the engine are obtained; based on the mixture state and the load state, the operation of the gas transmission device is controlled to control the way in which the mixture enters the pre-combustion chamber, and by identifying different vehicle driving conditions, the gas transmission device is dynamically adjusted in combination with the specific mixture state and the engine load, thereby achieving the purpose of improving the formation quality of the pre-combustion chamber mixture and the flexibility of concentration adjustment, thereby achieving the technical effect of high-flexible regulation of the mixture concentration under different engine conditions and combustion modes, and further solving the technical problem of low engine performance caused by poor formation quality of the pre-combustion chamber mixture.

[0070] Furthermore, the gas transmission device includes: a phase control shaft and a controllable valve, the phase control shaft is connected to the controllable valve, the controllable valve is connected to the mixing chamber and the pre-combustion chamber, wherein the phase control shaft is used to control the opening moment of the controllable valve entering an open state, and the controllable valve is used to transmit the mixture into the pre-combustion chamber when it is in the open state; the operation of the gas transmission device is controlled based on the mixture transmission strategy, including: in response to the mixture state characterizing that the concentration of the mixture is greater than or equal to a preset concentration, and the load state characterizing that the working efficiency of the engine is greater than or equal to a preset threshold, obtaining the current operating condition of the engine; in response to the operating condition being a lean combustion condition, controlling the rotation of the phase control shaft according to the first control parameter to delay the opening moment of the controllable valve.

[0071] The above-mentioned phase control shaft can be a vehicle device for adjusting the opening and closing of the above-mentioned controllable valve. The above-mentioned controllable valve can be a vehicle device for controlling the gas flow between the engine cylinder and the intake valve or the exhaust valve. The above-mentioned mixture transmission strategy can be a series of methods for controlling the mixture to be transmitted from the intake system to the pre-combustion chamber, and then from the pre-combustion chamber to the main combustion chamber. The above-mentioned preset threshold value can be a preset limit value of the engine operating efficiency. The above-mentioned first control parameter can be a control parameter of the above-mentioned phase control shaft set based on the above-mentioned lean combustion condition.

[0072] In an optional embodiment, considering that the engine uses a leaner mixture (i.e., more air mixed with less fuel) than normal when operating at high efficiency, the combustion process can be optimized by adjusting the valve to ensure that the mixture can be fully and evenly distributed in the pre-combustion chamber even when the fuel is less, thereby achieving more complete combustion. The control system has obtained the concentration of the mixture and the load state of the engine. If the concentration of the above-mentioned mixture is greater than or equal to the above-mentioned preset concentration, and the engine operating efficiency determined based on the above-mentioned engine load state is greater than or equal to the preset threshold, the control system can obtain the current operating condition of the engine. If the above-mentioned operating condition is a lean combustion condition, the phase control shaft is controlled to rotate according to the above-mentioned first control parameter to delay the opening time of the controllable valve.

[0073] For example, in order to accurately control the engine performance under lean-burn conditions, the first control parameter may be the flow area of ​​the holes on the adjusting ring groove and the hydraulic oil chamber. When the operating condition of the engine is not in the idle condition, the control system has obtained the concentration of the mixed gas in the mixing chamber through the air-fuel ratio sensor, and at the same time, the control system has determined the working efficiency of the engine through the throttle position sensor. If the concentration of the mixed gas is greater than or equal to the preset concentration, and the working efficiency of the engine is greater than or equal to the preset threshold, the control system may further obtain the current operating condition of the engine. If the operating condition is a lean-burn condition, the control system may drive the motor to control the rotation of the phase control shaft to adjust the flow area of ​​the holes on the ring groove and the hydraulic oil chamber, so that the controllable valve may open later.

[0074] Furthermore, the gas transmission device also includes: a hydraulic oil control shaft, which is connected to the controllable valve, wherein the hydraulic oil control shaft is used to control the duration of the controllable valve in the open state; the method also includes: in response to the operating condition being not a lean burn condition, controlling the rotation of the hydraulic oil control shaft according to a second control parameter to extend the duration of the controllable valve in the open state.

[0075] The hydraulic oil control shaft may be a vehicle device for controlling the opening duration of the controllable valve. The second control parameter may be a control parameter of the hydraulic oil control shaft set based on the non-lean combustion condition.

[0076] In an optional embodiment, considering that the engine needs more air and fuel to enter the cylinder to generate greater power output under acceleration or high load conditions, it is necessary to adjust the valve to increase the opening time of the intake valve, allowing more air to enter the pre-combustion chamber and fully mix with the fuel, thereby improving the thermal efficiency and power performance of combustion. Further considering the delay and impact that may exist in the engine device structure, affecting the accuracy and stability of the valve control action, therefore, in this embodiment, a hydraulic oil control shaft can be used to quickly respond to the instructions of the control system, so as to dynamically adjust the valve based on the real-time operating conditions of the engine. The concentration of the above-mentioned mixed gas is greater than or equal to the above-mentioned preset concentration, and the engine working efficiency determined based on the load state of the above-mentioned engine is greater than or equal to the preset threshold value. The control system can obtain the current operating condition of the engine. If the above-mentioned operating condition is not a lean combustion condition, the hydraulic oil control shaft is controlled to rotate according to the above-mentioned second control parameter to extend the duration of the controllable valve in the open state.

[0077] For example, in order to accurately control the engine performance under non-lean burn conditions, the second control parameter may be to reduce the flow area of ​​the oil passage and the inclined hole. When the operating condition of the engine is not in the idle condition, the control system has obtained the concentration of the mixed gas in the mixing chamber through the air-fuel ratio sensor, and at the same time, the control system has determined the working efficiency of the engine through the throttle position sensor. If the concentration of the mixed gas is greater than or equal to the preset concentration, and the working efficiency of the engine is greater than or equal to the preset threshold, the control system can further obtain the current operating condition of the engine. If the operating state is not a lean burn condition, the control system can drive the motor to control the rotation of the hydraulic oil control shaft to reduce the flow area of ​​the oil passage and the inclined hole, prolong the duration of the opening of the controllable valve, and thus reduce the concentration of the mixed gas in the pre-combustion chamber.

[0078] Furthermore, the method also includes: in response to the mixture state characterizing that the concentration of the mixture is greater than or equal to a preset concentration, and the load state characterizing that the working efficiency of the engine is less than a preset threshold, controlling the rotation of the phase control shaft according to the third control parameter to advance the opening time of the controllable valve.

[0079] The third control parameter may be a control parameter of the phase control axis set based on the mixture state and the engine load state.

[0080] In an optional embodiment, considering that the engine does not need to generate a lot of power under light load conditions, the control system can more finely control the combustion process to achieve higher efficiency. If the control system determines that the concentration of the above-mentioned mixed gas is greater than or equal to the preset concentration based on the obtained mixed gas state and the engine load state, and the engine working efficiency determined based on the above-mentioned load state is less than the above-mentioned preset threshold, the control system can control the rotation of the phase control shaft according to the third control parameter to advance the opening time of the controllable valve.

[0081] For example, in order to accurately control the working performance of the engine under low load conditions, the third control parameter can be to adjust the flow area of ​​the holes on the ring groove and the hydraulic oil chamber, and at the same time, increase the flow area of ​​the oil channel and the inclined hole. When the operating condition of the above-mentioned engine is not in the idle condition, the control system has obtained the concentration of the mixed gas in the mixing chamber through the air-fuel ratio sensor, and at the same time, the control system has determined the working efficiency of the engine through the throttle position sensor. If the concentration of the above-mentioned mixed gas is greater than or equal to the above-mentioned preset concentration, and the working efficiency of the above-mentioned engine is less than the above-mentioned preset threshold, the control system can drive the motor to adjust the flow area of ​​the holes on the ring groove and the hydraulic oil chamber so that the valve opens earlier. At the same time, the control system can drive the motor to increase the flow area of ​​the oil channel and the inclined hole to shorten the duration of the valve opening, thereby ensuring a richer mixed gas in the pre-combustion chamber.

[0082] Furthermore, the method also includes: in response to the mixture state characterizing that the concentration of the mixture is less than a preset concentration, controlling the operation of the fuel injection device according to a fourth control parameter to extend the operation time of the fuel injection device, wherein the fuel injection device is used to increase the concentration of the mixture in the mixing chamber.

[0083] The fourth control parameter may be a control parameter of the fuel injection device set based on the state of the mixed gas. The fuel injection device may be a vehicle device that sprays fuel into a combustion chamber or a pre-combustion chamber in a mist form, for example, a fuel injector or a high-pressure pump, but is not limited thereto.

[0084] In an optional embodiment, considering that when the concentration of the mixed gas is low, a longer time or more effective airflow movement is required to ensure that the fuel and air are fully mixed to form a uniform combustible mixed gas. Therefore, when the concentration of the mixed gas is less than the preset concentration, the control system can control the operation of the fuel injection device according to the fourth control parameter to extend the operation time of the fuel injection device, thereby increasing the concentration of the mixed gas in the mixing chamber.

[0085] For example, in order to accurately control the injection amount and injection timing of the fuel, the fuel injection device may be a fuel injector, and the fourth control parameter may be to extend the injection time of the fuel injector. When the operating condition of the engine is not in the idle condition, the control system has obtained the concentration of the mixed gas in the mixing chamber through the air-fuel ratio sensor. If the concentration of the mixed gas is less than the preset concentration, the control system may drive the fuel injector to extend the injection time until the mixing chamber is a rich mixed gas.

[0086] For another example, in order to provide a stable fuel pressure, the fuel injection device may be a high-pressure pump, and the fourth control parameter may be to extend the fuel injection time of the high-pressure pump. When the operating condition of the engine is not in an idle condition, the control system has obtained the concentration of the mixed gas in the mixing chamber through the air-fuel ratio sensor. If the concentration of the mixed gas is less than the preset concentration, the control system may drive the high-pressure pump to extend the fuel injection time until the mixing chamber is a rich mixed gas.

[0087] Furthermore, the method also includes: detecting the air volume in the precombustion chamber to obtain the air volume in the precombustion chamber; obtaining the difference between the air volume and a reference volume to obtain an air volume difference, wherein the reference volume is used to characterize the air volume contained in the precombustion chamber under normal circumstances; constructing a pressure relief parameter based on the air volume difference; and controlling the operation of a pressure relief valve based on the pressure relief parameter, wherein the pressure relief valve is connected to the precombustion chamber to remove the air inside the precombustion chamber.

[0088] The air volume may be the actual volume of air that enters the pre-combustion chamber through the air inlet and participates in the fuel mixing during the operation of the engine. The reference volume may be the amount of air contained in the pre-combustion chamber under normal circumstances. The pressure relief parameter may be a parameter for controlling the opening or closing of the pressure relief valve. The pressure relief valve may be a vehicle device for regulating the air pressure or oil pressure in the system.

[0089] In an optional embodiment, it is considered that the pre-combustion chamber ignition system relies on the rapid combustion of the mixture in the pre-combustion chamber to initiate combustion in the main combustion chamber. If the amount of air is insufficient, the mixture may be too thick, resulting in incomplete combustion and reduced combustion efficiency; if the amount of air is too much, the mixture may be too thin, which may also cause combustion problems. Therefore, the control system can optimize the combustion efficiency by detecting the amount of air in the pre-combustion chamber to ensure that the mixture is at a target concentration. The control system can first detect the air volume of the pre-combustion chamber to obtain the actual air volume in the pre-combustion chamber, and then the control system can calculate the difference between the above air volume and the above reference volume to obtain the above air volume difference. Finally, the control system can construct a pressure relief parameter based on the above air volume difference, and control the operation of the pressure relief valve based on the above pressure relief parameter to remove the air inside the pre-combustion chamber.

[0090] For example, in order to accurately adjust the amount of air inside the precombustion chamber and thus improve the combustion efficiency, the control system can pre-calculate the reference amount of the air volume inside the precombustion chamber under the current working conditions, and the calculation results show that the reference amount is 30 cubic centimeters. Then, the control system can obtain the air volume of the precombustion chamber as 35 cubic centimeters based on the mass air flow sensor, and further calculate the difference between the air volume and the reference amount, and obtain an air volume difference of 5 cubic centimeters, that is, the air volume in the precombustion chamber is higher than the reference value, which may cause the mixture to be too lean, affecting the combustion efficiency and emission performance. The control system can construct a pressure relief parameter based on the above air volume difference, and the pressure relief parameter can be used to control the opening of the pressure relief valve. Finally, the control system can increase the opening of the pressure relief valve based on the above pressure relief parameter, so that the air in the precombustion chamber is discharged through the pressure relief valve until the air volume in the precombustion chamber drops to or approaches the reference amount.

[0091] For ease of understanding, Figure 2 is a detailed flow chart of a mixed gas control method for a pre-combustion chamber according to an embodiment of the present invention, such as Figure 2 As shown, the control system can first obtain the current driving condition, and then determine whether the above driving condition is an idle condition. If the above driving condition is an idle condition, the process ends. If the above driving condition is not an idle condition, the control system can obtain the state of the mixed gas in the mixing chamber, and further determine whether the above mixed gas state is a lean mixed gas. If the above mixed gas state is a lean mixed gas, the control system can drive the injector to extend the injection time until the mixing chamber is a rich mixed gas. If the above mixed gas state is not a lean mixed gas, the control system can obtain the current engine load state, and further determine whether the above engine load state is a low load. If the above engine load state is a low load, the control system can drive the motor to adjust the flow area of ​​the ring groove and the hole on the hydraulic oil chamber so that the valve opens earlier. At the same time, the control system can drive the motor to increase the flow area of ​​the oil channel and the inclined hole to shorten the duration of the valve opening, thereby ensuring a richer mixture in the pre-combustion chamber. If the engine load state is not a low load, the control system can further obtain the current driving condition and determine whether the driving condition is a lean burn condition. If the driving condition is a lean burn condition, the control system can drive the motor to adjust the flow area of ​​the ring groove and the hole on the hydraulic oil chamber to open the controllable valve later. If the driving condition is not a lean burn condition, the control system can drive the motor to reduce the flow area of ​​the oil channel and the inclined hole, extend the duration of the controllable valve opening, and thus reduce the concentration of the mixed gas in the pre-combustion chamber.

[0092] Figure 3 is a structural diagram of an optional mixed gas preparation and supply control system according to an embodiment of the present invention, such as Figure 3 As shown, the mixed gas preparation and supply control system includes: an intake air flow control system 352, that is, Figure 3The portion above the middle dividing line is used to adjust the amount of air entering the pre-combustion chamber to ensure that the air supply matches the required concentration of the pre-combustion chamber mixture. Figure 3The part below the middle dividing line is responsible for controlling and optimizing the concentration and amount of the mixture entering the pre-combustion chamber. By controlling the mixing ratio of the injection and the air, the mixture in the pre-combustion chamber is ensured to be in an efficient state under different engine operating conditions. The lower part 301 of the pre-combustion chamber, a part of the pre-combustion chamber structure, is connected to the cylinder head 302, providing space for the formation and combustion of the mixture, and optimizing the combustion process through its structural design. The cylinder head 302, the top component of the engine, is connected to the lower part of the pre-combustion chamber. The gasket 303 can be used for sealing between the lower part of the pre-combustion chamber and the cylinder head to prevent leakage of combustion gas or mixture, and ensure the independence and airtightness of the combustion chamber and the pre-combustion chamber. The upper part 304 of the pre-combustion chamber, another part of the pre-combustion chamber structure, is connected to the lower part 301 of the pre-combustion chamber, and together constitutes the complete volume of the pre-combustion chamber. The valve 305 can be used to control the passage of the mixture in and out of the pre-combustion chamber. Its opening and closing are controlled by the camshaft and the hydraulic system to adjust the supply amount and time of the mixture. Spring 306 is installed on valve 305, and its function is to ensure that valve 305 can be tightly closed in non-working state. Block 307 can be used to position and support hydraulic plunger 309 to ensure its normal operation and prevent excessive movement or deviation of the plunger. Sealing ring 308 is installed at the connection between the upper part 304 of the pre-combustion chamber and the lower part 301 of the pre-combustion chamber to ensure the sealing inside the pre-combustion chamber and prevent the mixture or combustion gas from leaking from the joint surface of the pre-combustion chamber under high pressure. Hydraulic plunger 309 is responsible for pressure conversion in the hydraulic system and is driven by the camshaft to control the opening and closing of the valve. Sealing ring 310, sealing ring 311, and sealing ring 312 are assembled on fixed block 350 to seal the connection between fixed block 350 and the upper part of the pre-combustion chamber, ensure the sealing of the mixture control system A, and avoid leakage of hydraulic oil or air. Mixture disturbance shaft 313 can change the corresponding angle between the air hole and the through hole by rotation, thereby affecting the formation time and concentration of the mixture and ensuring uniform and optimized combustion of the mixture. Bolts 314 and 323 are used to fasten and connect different components, ensuring the stability of the structure and the correct alignment between components. Cover plates 315 and 322 are used to close the opening of the device structure. Bearings 316, 319 and 341 are used to provide low-friction, smooth rotational motion between the rotating shaft and the fixed structure. Motor spline shaft 317 and motor spline shaft 321 are the motor and the shaft that needs to rotate. Motor 318 is used to drive the mixture disturbance shaft 313, and motor 320 is used to drive the phase control shaft 325. Spring 328 is installed on the one-way valve body 329 to ensure that the one-way valve body 329 remains in a closed state when not in operation to prevent the hydraulic oil from flowing back. The spring 331 contacts the bottom surface of the oil pressure plunger 337. Its function may be to provide a certain elastic support to ensure the position of the oil pressure plunger in the non-working state. At the same time, when the camshaft 342 rotates, the oil pressure plunger can be quickly reset to ensure that the hydraulic oil can be discharged from the plunger cavity in time to maintain the normal working pressure of the system.Spring 333, installed between slider 332 and plug 336, is used to provide elastic support for the slider to ensure that the slider is fixed and reset in position. Spring 334, installed between one-way valve body 335 and support block 327, is used to ensure that one-way valve body 335 is closed in a non-working state to prevent compressed air or mixed gas from flowing back and ensure the unidirectionality of valve drive and mixed gas supply process. Spring 344, installed between valve body 345 and air compressor plunger 343, is used to provide support and reset force for air compressor plunger 343 to ensure the position of air compressor plunger 343 in a non-compressed state and to quickly reset it after completing the compressed air supply task to prepare for the next working cycle. Spring 347, installed on valve body 345, is used to maintain the position of valve body 345 stable, or to provide additional sealing force when valve body 345 is closed to ensure that fresh air or mixed gas does not flow back or leak when supplied to the pre-combustion chamber. Plugs 324, 326 and 336 are used to close specific holes or channels to prevent unnecessary substances from flowing in or out, such as in the pressure regulating channel to stabilize the air pressure. Phase control shaft 325 changes the opening timing of the valve by adjusting the alignment between its upper ring groove and the upper hole of the hydraulic oil chamber, thereby affecting the moment when the mixed gas enters the pre-combustion chamber. Support block 327 is used to fix and support other components in the entire system, such as hydraulic plungers, valve bodies, etc., to ensure their stable operation. Check valve bodies 329 and 335 are used to prevent the reverse flow of hydraulic oil or air to ensure that the system operates in a predetermined direction. Annular block 330, 346 and 349 are used to fix or limit the movement of other components, and may also participate in the sealing structure to ensure the air tightness and liquid tightness inside the system. Slider 332 is used to position and guide the movement of the plunger in the hydraulic system to prevent the plunger from deviating from the normal trajectory under the action of pressure. The oil pressure plunger 337 is driven by the camshaft in the hydraulic system to pressurize the hydraulic oil and further control the opening and closing of the valve. The front cover plate 338 is used to close and support the front end of the hydraulic system, and usually includes structures such as oil channels and air holes. The gear 339 is used for transmission and positioning, such as the gear that transmits the rotation of the engine crankshaft to the camshaft. The retaining ring 340 is used for axial positioning of the camshaft. The camshaft 342, through rotation, the cam structure on it can drive the hydraulic plunger to move, changing the timing and duration of the opening and closing of the valve. The air pressure plunger 343 is driven by the camshaft in the intake system to increase the air pressure entering the pre-combustion chamber and optimize the formation of the mixture. The valve body 345 controls and adjusts the flow of hydraulic oil or air to ensure the proper supply and discharge of the medium in the system. The injector mounting port 348 is used to install the injector to ensure that the fuel can be accurately injected into the pre-combustion chamber and mixed with the air to form a mixture. The fixing blocks 350 and 351 are used to fix and support the moving parts in the system to ensure their correct position and stable operation.The oil inlet is the main path for hydraulic oil to enter the system. Its function is to deliver the high-pressure oil provided by the hydraulic pump to the hydraulic control components. The oil return channel is the channel for hydraulic oil to return from the system to the oil tank or oil pump. When the hydraulic oil completes its working cycle and no longer needs to provide pressure, it will flow back through the oil return channel to prepare for the next cycle.

[0093] For ease of understanding Figure 3 , specifically, Figure 4 is a detailed structural diagram of an optional mixed gas preparation and supply control system according to an embodiment of the present invention, such as Figure 4 As shown, the mixture preparation and supply control system includes: a pre-combustion chamber lower part 301, a cylinder head 302, a gasket 303, a pre-combustion chamber upper part 304, a valve 305, a spring 306, a stopper 307, a sealing ring 308, a sealing ring 310, a fixing block 350, a mixture disturbance shaft 313, an injector installation port 348, a camshaft 342, a phase control shaft 325, and a support block 327. In addition, the mixture preparation and supply control system also includes: a plug 401, which is installed on the cylinder head 302 and is used to close a certain opening or the end of a pipe to prevent fluid leakage or external impurities from entering. The sealing ring 402 is assembled on the pre-combustion chamber upper part 304 and is used to seal the connection between the spark plug 407 and the pre-combustion chamber to prevent combustion gas leakage and ensure the high-pressure environment during ignition and the normal operation of the spark plug 407. The intake flow control valve 403 is responsible for regulating the air flow entering the pre-combustion chamber. The opening of the control valve can accurately adjust the air supply to match the target air-fuel ratio required for the pre-combustion chamber mixture to form. The hydraulic oil control shaft 404 adjusts the flow of oil in the hydraulic system through its rotational movement, thereby controlling the duration of the valve opening. The pressure regulating valve 405 adjusts the pressure difference inside and outside the pre-combustion chamber to ensure that the appropriate air pressure can be maintained during the preparation and supply of the mixture. The sealing ring 406 is assembled on the upper part 304 of the pre-combustion chamber to seal the connection between the pressure regulating valve 405 and the pre-combustion chamber, ensuring the sealing of the pressure regulating valve 405 when adjusting the air supply pressure of the pre-combustion chamber, avoiding leakage during the pressure adjustment process, and affecting the concentration and pressure of the mixture in the pre-combustion chamber. The spark plug 407 is responsible for generating an ignition spark in the pre-combustion chamber to ignite the mixture in the pre-combustion chamber.

[0094] For ease of understanding Figure 3 and Figure 4 , specifically, Figure 5 is a structural diagram of an optional mixed gas control system according to an embodiment of the present invention, such as Figure 5As shown, the mixed gas control system includes: a support block 327, a cover plate 315, a bearing 316, a motor spline shaft 317, a motor 318, a mixed gas disturbance shaft 313, a bearing 319, and a hydraulic oil control shaft 404. In addition, the mixed gas control system also includes: a motor spline shaft 501, which is used to connect the motor 502 and the hydraulic oil control shaft 404. The motor 502 is used to drive the hydraulic oil control shaft 404 to rotate. The cover plate 503 is used to close or protect the connection area between the hydraulic oil control shaft 404 and the motor 502.

[0095] For ease of understanding Figure 3 and Figure 4 , specifically, Figure 6 is a structural diagram of an optional intake air flow control system according to an embodiment of the present invention, such as Figure 6 As shown, the intake flow control system includes: an intake flow control valve 403, a support block 327, and a compression plunger 343.

[0096] Figure 7 is a structural diagram of an optional lower part of the pre-combustion chamber according to an embodiment of the present invention, such as Figure 7 As shown, the pre-combustion chamber includes: a through hole 701 for connecting the valve system and the pre-combustion chamber internal cavity 703. A threaded hole 702 for installing a fixing or a connecting piece. The internal cavity 703 is used to contain and mix fuel and air to form a combustible mixture. An inclined groove 704 is used for guiding and positioning. For example, the inclined groove on the lower part of the pre-combustion chamber can be used to guide the correct insertion and positioning of the mixture disturbance shaft to ensure the matching of the shaft and the support block.

[0097] Figure 8 is a structural diagram of another optional upper part of the pre-combustion chamber according to an embodiment of the present invention, such as Figure 8As shown, the precombustion chamber includes: a through hole 801, which is a channel for the hot jet to be sprayed from the precombustion chamber into the main combustion chamber. A through hole 802 is an opening on the upper part of the precombustion chamber, and its main function is to allow the movement of the valve. A threaded hole 803 is used to fix the connection between the upper part of the precombustion chamber and the lower part of the precombustion chamber or the cylinder head. A through hole 804 is used for the passage of other related components to ensure that they can perform specific functions in the precombustion chamber. A sealing ring 805 is used to ensure the sealing between the precombustion chamber and the main combustion chamber to prevent the leakage of the mixture or combustion products during the combustion process, while maintaining the air pressure inside the precombustion chamber. A sealing ring 806 is used to provide additional sealing to prevent the leakage of hydraulic oil, air or mixture when the valve is working. Cavity 807 is used to mix fuel and air to form a combustible mixture. A sealing ring 808 is used to seal between other components and the upper part of the precombustion chamber. A through hole 809 can be used to disturb and optimize the mixture to ensure uniform distribution and effective combustion of the mixture. The threaded hole 810 is used to install the fixing part. The through hole 811 is used to guide the airflow, the mixed gas or some operating parts into the pre-combustion chamber. The threaded hole 812 and the threaded hole 813 are used to install other components with threaded connection to ensure their stable connection and correct positioning with the upper part of the pre-combustion chamber.

[0098] Fig. 9 is a structural diagram of an optional valve according to an embodiment of the present invention, such as Fig. 9 As shown, the valve includes: a valve ground 901, the valve bottom surface is a component of the valve, which directly contacts the valve seat and is used to seal the gap between the valve and the valve seat to prevent gas leakage in the combustion chamber or pre-combustion chamber. The valve is used to control the passage of the mixed gas (a mixture of air and fuel) from the intake duct into the pre-combustion chamber. By opening and closing the valve, it is possible to accurately control when the mixed gas enters the pre-combustion chamber and the amount of mixed gas entering. The threaded hole 902 is used to install the valve guide sleeve and the valve spring to ensure the correct alignment of the valve and the installation position of the spring so that the valve can be opened and closed smoothly.

[0099] Fig.10 is a structural diagram of an optional mixed gas disturbance shaft according to an embodiment of the present invention, such as Fig.10 As shown, the mixed gas disturbance shaft includes: an external limiting boss 1001, which is used to prevent excessive movement or rotation of the components; a motor keyway 1002, which is used for reliable transmission between the motor drive shaft and the disturbance shaft; an internal cavity 1003, which is used to store fluid or accommodate internal structures; and a through hole 1004, which is used as a passage for air flow or oil flow.

[0100] Fig.11a is a structural diagram of an optional support block according to an embodiment of the present invention, Fig.11b is a structural diagram of another optional support block according to an embodiment of the present invention, Fig.11cis a structural diagram of another optional support block according to an embodiment of the present invention, such as Fig.11a , Fig.11b and Fig.11c As shown, the support block includes: 1101 bearing groove, which is used to install bearings to ensure that the rotating parts can rotate smoothly and reduce friction and wear. Oil channel 1102 is one of the paths for hydraulic oil to flow inside the above-mentioned support block. Cavity 1103 and cavity 1109 are used to store and guide other fluids or airflows. Through hole 1104, threaded hole 1118, through hole 1123, through hole 1127, the above-mentioned through holes and threaded holes are used to install and connect various components on the above-mentioned support block to ensure precise alignment and firm connection between them. 1105 camshaft installation cavity, used for the installation of the above-mentioned camshaft. Air hole 1106, used to connect the pre-combustion chamber with the external air supply system to ensure that the pre-combustion chamber can obtain sufficient air for fuel mixing and combustion. Mixing chamber 1107, used for mixing fuel and air and preparing for combustion. Injection hole 1108, threaded hole 1110, used to fix or install the connector between the above-mentioned support block and other components. The disturbance shaft installation cavity 1111 is used to assemble the cavity of the above-mentioned mixture disturbance shaft, ensuring that the disturbance shaft can rotate and effectively disturb the mixture in the pre-combustion chamber, thereby improving the uniformity of the mixture. The spline hole 1112 is used to connect the above-mentioned motor spline shaft with the above-mentioned hydraulic oil control shaft or the above-mentioned mixture disturbance shaft and other components. The hydraulic oil chamber 1113 stores and transfers hydraulic oil. The oil passages 1114, 1116, and 1122 are used for the hydraulic oil to circulate between different components inside the support block 27, ensuring the normal operation of the hydraulic system and controlling the opening and closing of the above-mentioned valves. The one-way valve installation cavity 1115, the one-way valve installation cavity 1121, and the one-way valve installation cavity 1126 are used to install the one-way valve assembly. The plug installation hole 1117 is used to install the plug to ensure the sealing of the hydraulic oil chamber and other oil channel systems, prevent the leakage of hydraulic oil, and maintain the oil pressure stable. The oil hole 1119 is used to control the flow direction of the hydraulic oil. The plunger cavity 1120 and the plunger cavity 1124 are used to install the above-mentioned oil pressure plunger and the above-mentioned air pressure plunger. The groove 1125 and the groove 1133 are used for the circulation of hydraulic oil. The through hole 1128 is used for guiding or positioning the internal components of the above-mentioned support block. The pressure regulating channel 1129 is used for regulating the channel of the air pressure inside the pre-combustion chamber. The inclined hole 1130 and the inclined hole 1131 are used to change the guidance of the oil channel, affect the flow path of the hydraulic oil, and thus affect the duration and time of the valve opening. The through hole 1132 is used for the penetration of gas or liquid fluid.

[0101] Fig.12 is a structural diagram of an optional phase control axis according to an embodiment of the present invention, such as Fig.12As shown, the phase control shaft includes: a through hole 1201, which is a channel for transmitting fluid or signals inside the phase control shaft. A spline groove 1202, which is used to cooperate with the spline shaft of the motor to allow power transmission between the phase control shaft and the motor. Annular grooves 1203 and 1204, which are used to control the flow of hydraulic oil. A through hole 1205, which is used to position or guide the phase control shaft, to ensure that the rotating shaft can rotate smoothly and stably when performing a function, avoiding improper friction or displacement. A cavity 1206, which is used to accommodate components or fluids.

[0102] Fig.13 is a structural diagram of an optional one-way valve body according to an embodiment of the present invention, such as Fig.13 As shown, the one-way valve body includes: a front end 1301 of the valve body, which is the part of the one-way valve body that is in direct contact with the flow direction of the hydraulic oil. A limit groove 1302, which is used to limit the movement range of the one-way valve body, to ensure that the one-way valve can be stably opened or closed during operation, to prevent excessive displacement or jamming. A cavity 1303, which is used to contain the hydraulic oil.

[0103] akin, Fig.14 is a structural diagram of another optional one-way valve body according to an embodiment of the present invention, such as Fig.14 As shown in FIG. 1 , the one-way valve body includes: a valve body front end 1401, a limit groove 1402, and a cavity 1403. The functions of the above components are similar to Fig.13 The functions of the corresponding components described in are the same, so they will not be repeated here. It should be noted that Fig.13 The non-return valve body described is Fig.14 The non-return valve body described can act in different positions and under different working conditions. For example, Fig.13 The one-way valve body described can play a role in the above valve opening process to ensure that the hydraulic oil enters in one direction. Fig.14 The one-way valve body described can work when the above-mentioned valve is closed and the pressure in the above-mentioned hydraulic oil chamber needs to be released, ensuring that the hydraulic oil can flow out in one direction when the pressure is too high, thereby maintaining the stability of the hydraulic system.

[0104] Fig.15 is a cross-sectional view of an optional front cover according to an embodiment of the present invention, such as Fig.15 As shown, the front cover plate includes: oil channel 1501, oil channel 1502, oil channel 1504, oil channel 1506, and oil channel 1507, which are used to guide the internal flow of hydraulic oil. Cavity 1503 is used to accommodate components or fluids. Groove 1505 is used to install other control elements to provide positioning and fixation for these components. Through hole 1508 is used for the passage of hydraulic oil or air flow to provide necessary fluid paths for other components in the hydraulic system. Through hole 1509 is used to connect external components, such as sensors, actuators, etc., or is an inlet and outlet channel for hydraulic oil or other fluids.

[0105] Fig.16 is a structural diagram of an optional camshaft according to an embodiment of the present invention, such as Fig.16 As shown, the camshaft includes: a compression cam 1601, which is used to drive the above-mentioned compression plunger, so as to introduce fresh air into the mixing chamber of the pre-combustion chamber, and mix it with the fuel injected by the injector to form a combustible mixture. The disc 1602 is used to ensure the smooth rotation of the camshaft and the effective operation of each cam. The through hole 1603 is one of the channels for the hydraulic oil to flow back from the above-mentioned hydraulic oil chamber to the cavity 1608. The through hole 1604 serves as a channel for the hydraulic oil to flow out of the cavity 1608. The threaded hole 1605 is used to install the fixing part. The groove 1606 serves as a path for the hydraulic oil to flow out of the hydraulic oil chamber. The through hole 1607 is used for the passage of the hydraulic oil or airflow inside the camshaft, and is a channel connecting different cavities and oil channels. The cavity 1608 is used to accommodate the hydraulic oil. The oil pressure cam 1609 is used to drive the above-mentioned oil pressure plunger. The ring groove 1610 controls the outflow of the hydraulic oil. The keyway 1611 is used to connect the gears so as to transmit power to the camshafts through the chain at the crankshaft end of the engine, ensuring that the camshafts can rotate synchronously to drive the oil pressure cam 1609 and the gas pressure cam 1601 thereon. The ring groove 1612 is used to cooperate with the ring groove of the phase control shaft to adjust the time when the hydraulic oil enters the valve plunger cavity.

[0106] Fig.17 is a structural diagram of an optional valve body according to an embodiment of the present invention, such as Fig.17 As shown, the valve body includes: an annular groove 1701, which can be used to install and fix the spring, or as one of the paths for airflow or oil flow. The limiting part 1702 is used to limit the movement range of the above-mentioned compressed air plunger to ensure that the compressed air plunger can work stably when driving fresh air into the above-mentioned mixing chamber, prevent excessive displacement or jamming, and thus ensure precise control of air supply. The front end 1703 of the valve body is the part of the above-mentioned valve body that is in direct contact with the external environment or other parts of the system. It can affect the opening pressure and flow direction of the airflow and oil flow, and realize the control of the valve opening time by cooperating with the above-mentioned compressed air plunger.

[0107] Fig.18 is a structural diagram of an optional annular stopper according to an embodiment of the present invention, such as Fig.18 As shown, the annular stopper includes: a threaded hole 1801, which is used to fix the annular stopper so that it can be stably installed on the fixing block and is easy to disassemble and maintain. An annular groove 1802, which is used to accommodate the sealing ring to ensure the sealing between the annular stopper and the oil pressure plunger and the support block. A through hole 1803, which is used for the passage of hydraulic oil or other fluids.

[0108] Fig.19is a structural diagram of an optional fixed block according to an embodiment of the present invention, such as Fig.19 As shown, the fixing block includes: threaded holes 1901 and 1902 for installing bolts. By cooperating with the bolts, the fixing block can be firmly connected to other components to ensure the stability and sealing of the entire system structure. Cavity 1903 is used to accommodate the hydraulic oil control shaft or other related components and provide them with working space in the fixing block. Oil channel 1904 is one of the circulation paths of the hydraulic oil inside the fixing block to ensure the smooth flow of the oil.

[0109] Fig. 20 is a structural diagram of another optional fixed block according to an embodiment of the present invention, such as Fig. 20 As shown, the fixed block includes: a through hole 2001, which is used for the passage of the above-mentioned valve. It is the channel through which the valve passes during the opening and closing process, ensuring that the valve can move up and down freely to achieve the supply control of the mixture. An annular groove 2002 is used to install an annular block or a sealing ring to prevent the leakage of the mixture and maintain the air pressure and the concentration of the mixture in the pre-combustion chamber. A threaded hole 2003 is used to connect the above-mentioned fixed block with the upper part of the pre-combustion chamber or other structures. The groove 2004 is used to position the above-mentioned valve when it is opened, to ensure the accurate position of the valve during the opening process, to prevent the deviation of the valve opening angle, and to affect the supply and combustion efficiency of the mixture. The cavity 2005 is used to accommodate a spring or other components related to the above-mentioned valve, and to control the closing of the valve through the elastic force of the spring, to ensure that the valve can be tightly closed when not in operation, and to prevent accidental leakage of the mixture. The valve cavity 2006 is the working space of the valve in the fixed block, which not only provides a movement path for the valve, but also controls the movement range of the valve by cooperating with the bottom surface of the valve to ensure the normal opening and closing of the valve. The threaded hole 2007 provides a fixed point for the connection between the fixed block and other structural parts, ensuring the stability of the entire system structure and the precise control of the valve.

[0110] Fig.21 is a structural diagram of an optional hydraulic oil control shaft according to an embodiment of the present invention, such as Fig.21 As shown, the hydraulic oil control shaft includes: a spline groove 2101, which is used for key connection between the hydraulic oil control shaft and the motor spline shaft. The oil channel 2102 is the flow path of the hydraulic oil inside the hydraulic oil control shaft, which is connected to the plunger cavity and the oil hole on the support block. By changing the flow area of ​​the oil channel and the relevant hole on the support block, the valve opening duration is adjusted. The cavity 2103 is used to store and transfer hydraulic oil.

[0111] The embodiment of the present application also provides a pre-combustion chamber mixed gas control device, which should be noted that the device can be used to execute the pre-combustion chamber mixed gas control method. The specific implementation method and application scenario are the same as those of the above embodiment and will not be repeated here. Fig. 22 is a schematic diagram of a mixed gas control device for a pre-combustion chamber according to an embodiment of the present invention, such as Fig. 22 As shown, the device comprises:

[0112] The first acquisition module 2202 is used to acquire the current driving condition of the vehicle.

[0113] The second acquisition module 2204 is used to obtain the current mixture state of the mixing chamber and the current load state of the engine in response to the driving condition being a preset condition, wherein the preset condition is used to characterize that the engine is currently providing power to the vehicle, the mixture state is used to characterize whether the concentration of the mixture contained in the mixing chamber is greater than or equal to the preset concentration, and the load state is used to characterize whether the working efficiency of the engine is greater than or equal to the preset efficiency.

[0114] The device control module 2206 is used to control the operation of the gas transmission device based on the state of the mixed gas and the load state to control the mixed gas to enter the pre-combustion chamber, wherein the pre-combustion chamber is connected to the mixing chamber through the gas transmission device.

[0115] Furthermore, the gas transmission device includes: a phase control shaft and a controllable valve, the phase control shaft is connected to the controllable valve, the controllable valve is connected to the mixing chamber and the pre-combustion chamber, wherein the phase control shaft is used to control the opening moment of the controllable valve entering an open state, and the controllable valve is used to transmit the mixture into the pre-combustion chamber when it is in an open state; the device control module is also used to: in response to the mixture state characterizing that the concentration of the mixture is greater than or equal to a preset concentration, and the load state characterizing that the working efficiency of the engine is greater than or equal to a preset threshold, obtain the current operating condition of the engine; in response to the operating condition being a lean burn condition, control the rotation of the phase control shaft according to the first control parameter to delay the opening moment of the controllable valve.

[0116] Furthermore, the gas transmission device also includes: a hydraulic oil control shaft, which is connected to the controllable valve, wherein the hydraulic oil control shaft is used to control the duration of the controllable valve in the open state; the above-mentioned device also includes: a hydraulic oil control shaft control module, which is used to control the rotation of the hydraulic oil control shaft according to the second control parameter in response to the operating condition not being a lean burn condition, thereby extending the duration of the controllable valve in the open state.

[0117] Furthermore, the above-mentioned device also includes: a phase control shaft control module, which is used to control the rotation of the phase control shaft according to the third control parameter in response to the mixture state indicating that the concentration of the mixture is greater than or equal to a preset concentration, and the load state indicating that the working efficiency of the engine is less than a preset threshold, so as to advance the opening time of the controllable valve.

[0118] Furthermore, the above-mentioned device also includes: a fuel injection device control module, which is used to control the operation of the fuel injection device according to a fourth control parameter in response to the mixture state characterizing that the concentration of the mixture is less than a preset concentration, and extend the operation time of the fuel injection device, wherein the fuel injection device is used to increase the concentration of the mixture in the mixing chamber.

[0119] Furthermore, the above-mentioned device also includes: a third acquisition module, which is used to detect the air volume of the precombustion chamber to obtain the air volume in the precombustion chamber; obtain the difference between the air volume and the reference volume to obtain the air volume difference, wherein the reference volume is used to characterize the air volume contained in the precombustion chamber under normal circumstances; construct a pressure relief parameter based on the air volume difference; the above-mentioned device also includes: a pressure relief valve control module, which is used to control the operation of the pressure relief valve based on the pressure relief parameter, wherein the pressure relief valve is connected to the precombustion chamber to remove the air inside the precombustion chamber.

[0120] An embodiment of the present application further provides a vehicle, comprising: a memory storing an executable program; and a processor for running the program, wherein the method in each embodiment of the present invention is executed when the program is running.

[0121] An embodiment of the present application further provides a computer-readable storage medium, which includes a stored executable program, wherein when the executable program is running, the device where the computer-readable storage medium is located is controlled to execute the methods in various embodiments of the present invention.

[0122] An embodiment of the present application further provides a computer program product, including a computer program, which implements the methods in various embodiments of the present invention when executed by a processor.

[0123] An embodiment of the present application further provides a computer program product, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium is used to store a computer program, and when the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0124] The embodiments of the present application further provide a computer program, which implements the methods in the above-mentioned embodiments of the present invention when executed by a processor.

[0125] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0126] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0127] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0128] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0129] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0130] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0131] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for controlling a mixture of a pre-combustion chamber, characterized in that: include: Get the current driving condition of the vehicle; In response to the driving operating condition being a preset operating condition, obtaining a current mixed gas state of the mixing chamber and a current load state of the engine, wherein the preset operating condition is used to indicate that the engine is currently providing power to the vehicle, the mixed gas state is used to indicate whether a concentration of the mixed gas contained in the mixing chamber is greater than or equal to a preset concentration, and the load state is used to indicate whether a working efficiency of the engine is greater than or equal to a preset efficiency; The operation of a gas transmission device is controlled based on the state of the mixed gas and the load state to control the mixed gas to enter a pre-combustion chamber, wherein the pre-combustion chamber is connected to the mixing chamber through the gas transmission device.

2. The method according to claim 1, characterized in that The gas transmission device comprises: a phase control shaft and a controllable valve, wherein the phase control shaft is connected to the controllable valve, and the controllable valve is connected to the mixing chamber and the pre-combustion chamber, wherein the phase control shaft is used to control the opening time of the controllable valve to enter the opening state, and the controllable valve is used to transmit the mixed gas into the pre-combustion chamber in the opening state; Controlling the operation of the gas transmission device based on the mixed gas transmission strategy includes: In response to the mixed gas state indicating that the concentration of the mixed gas is greater than or equal to a preset concentration, and the load state indicating that the working efficiency of the engine is greater than or equal to a preset threshold, obtaining a current operating condition of the engine; In response to the operating condition being a lean-burn condition, the phase control shaft is controlled to rotate according to a first control parameter to delay the opening timing of the controllable valve.

3. The method according to claim 2, characterized in that The gas transmission device further comprises: a hydraulic oil control shaft, the hydraulic oil control shaft being connected to the controllable valve, wherein the hydraulic oil control shaft is used to control the duration of the controllable valve being in the open state; The method further includes: in response to the operating condition not being the lean-burn condition, controlling the hydraulic oil control shaft to rotate according to a second control parameter to extend the duration that the controllable valve is in the open state.

4. The method according to claim 2, characterized in that: The method further comprises: In response to the mixture state indicating that the concentration of the mixture is greater than or equal to a preset concentration, and the load state indicating that the working efficiency of the engine is less than the preset threshold, the phase control shaft is controlled to rotate according to a third control parameter to advance the opening time of the controllable valve.

5. The method according to claim 2, characterized in that: The method further comprises: In response to the mixed gas state characterizing that the concentration of the mixed gas is less than a preset concentration, the operation of the fuel injection device is controlled according to a fourth control parameter to extend the operation time of the fuel injection device, wherein the fuel injection device is used to increase the concentration of the mixed gas in the mixing chamber.

6. The method according to claim 1, characterized in that The method further comprises: Performing air volume detection on the pre-combustion chamber to obtain the air volume of the pre-combustion chamber; Obtaining a difference between the air volume and a reference volume to obtain an air volume difference value, wherein the reference volume is used to characterize the air volume contained in the pre-combustion chamber under normal circumstances; constructing a pressure relief parameter based on the air volume difference; The operation of a pressure relief valve is controlled based on the pressure relief parameter, wherein the pressure relief valve is connected to the pre-combustion chamber to exhaust air inside the pre-combustion chamber.

7. A mixed gas control device for a pre-combustion chamber, characterized in that: include: A first acquisition module, used to acquire the current driving condition of the vehicle; a second acquisition module, configured to acquire a current mixed gas state of the mixing chamber and a current load state of the engine in response to the driving condition being a preset condition, wherein the preset condition is used to indicate that the engine is currently providing power to the vehicle, the mixed gas state is used to indicate whether the concentration of the mixed gas contained in the mixing chamber is greater than or equal to a preset concentration, and the load state is used to indicate whether the working efficiency of the engine is greater than or equal to a preset efficiency; The device control module is used to control the operation of the gas transmission device based on the mixed gas state and the load state to control the mixed gas to enter the pre-combustion chamber, wherein the pre-combustion chamber is connected to the mixing chamber through the gas transmission device.

8. A vehicle, characterized in that: include: A memory storing an executable program; A processor, configured to run the program, wherein the program executes the method according to any one of claims 1 to 6 when running.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored executable program, wherein when the executable program is executed, the device where the storage medium is located is controlled to execute the method according to any one of claims 1 to 6.

10. A computer program product, characterized in that The invention comprises a computer program which, when executed by a processor, implements the method according to any one of claims 1 to 6.

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